Of the replacement battery manufacturers, SCUD seems to have a good reputation. You would probably have to order via an international seller, though...

I've had quite a few BL-5Js over the years. SCUD was the only one that suddenly switched off on me when it said 53% left. I took it out and it was all puffed up to scary proportions. To its defense I have to say it was at least two years old, if not three.

__________________In particle accelerators atoms are indeed not only touching each others. But banging together in a massive explosive orgasm.
-- nieldk in a TMO post